The jungle position is critical. You have to keep up with three lanes and also keep up with your jungle. The key is to be EVERYWHERE at one time. Always keep yourself positioned to make ganks and always keep an eye out on your map if a lane is pushing for a dominant gank opportunity. Boots are important early is you have a demanding team for ganks. That is why it's important to get the mobility boots to move around the map quickly.

If you have extra money when you go back buy a ward or two and after you gank lanes, help them out by placing a ward in a critical area, this helps the team overall. Always tell everyone what your doing, ping if your coming in for a gank, or if you think a situation is a lane is dangerous.

Always keep your times on your respawns because its easy to fall behind on levels and a jungler. Don't stay in lanes too long, gank and get back to jungling! Also if a lane backs, it is important to keep minions off their tower. Like I said... you must be EVERYWHERE at once. Jungling is not easy, you must control the whole map!

Wards win games..... simple as that. If everyone doesn't work together to gain vision you will lose. Its not just the supports job to ward. EVERYONE NEEDS TO BUY A FEW WARDS!

Always have a positive attitude even when you have someone who feeds. Give them positive support because if they get mad they will perform even worse.